Answer:
Step-by-step explanation:
Given
There are 28 students in a class out of which
13 are boys so the remaining 15 are girls
Ratio of girls to boys in the class
Step-by-step explanation:
I think geomatory box is also similar to original figure
3a + b = 54...when b = 9
3a + 9 = 54
3a = 54 - 9
3a = 45
a = 45/3
a = 15 <===
There are 16 smaller triangles within the main large one. .25=1/4, so your fraction is 1/4. 1/4 of 16 is 4, because 4+4+4+4=16. So colour in 4 triangles. Hope this helps!
Omar makes $882.25 a month
Donna = 2x
Omar = x
Alex = x - 209
4x - 209 = 3320
4x = 3529
x = $882.25